jquery selectors ... more investigation

I still don't have a very good grasp on selectors in html, javascript and css.  I'm getting there though.  

With the updates in jquery, the library has also depreciated some of there functions (like one niffy one I discovered: live).  The live event allows functions to work even when parts of the page is loaded dynamically.  This is simple way of doing things (answering a lot of my issues) but it slow things down because it looks for the event in the entire document!

answer: use ".on()" (eg, $('#parent').on("click", "#child", function() {}); )